Machine for operating upon soles



May 23, 1944. F. RlcKs El'AL MACHINE FOR OI ERATING UPON SOLES FiledMarch 24, 1942 4 Sheets-Sheet l F. RICKS EFAL MACHINE FOR OPERATING UPONSOLES Filed March 24,1942

4 Sheets-Sheet 3 M y23,19..' F. HICKS Em 2,349,319

MACHINE FOR OPERATI NG UPON SOLES Filed March 24, 1942 4 Sheets-Sheet 4Patented May 23, 1944 NT] OFFICE MACHINE Foa OPERATING UPON somss Fred.Ricks and John William Pratt, Leicester,

7 England, assignors to United Shoe Machinery Corporation, Borough ofFlemington, N. J., a corporation of New Jersey Application March 24,1942, Serial No. 435,992 In' Great Britain April 29, 1941 This inventionrelates to machines 'for operat-' ing upon soles andis'hereinillustrated and described as embodied in' a channeling machine of thetype described in U. S. Letters Patent No. 1,023,801, granted April 23,1912 upon the application of Frederic E. Bertrand. In machines of thistype the sole is presented upon a work table which is normally held in araised operating position and which may be lowered by a treadle toaccommodate the removal of the sole from the machine and thepresentation of a new sole to be operated upon. Such'machines,furthermore, are provided with an edge gage which may be shiftedtransversely of the direction of the feed to vary the locality ofoperation of the channeling knives with reference to the edge of thesole The edge gage shifting mechanism disclosed in Letters Patent No.1,023,801 is operated by hand. An improvement upon this mechanism,however, is disclosed in U. S. Letters Patent No. 2,241,523, granted May13, 1941, upon the joint application of Fred Ricks and Frank ColemanChoice, such improvement comprising a power driven mechanism undercontrol of the operator for shifting the edge gage from one operatingpositionto another.

It is an object of the present inventiontdpro: vide an edge gageshifting mechanism more fully automatic in character and at thesame timeof simpler construction than that disclosed in Let.- ters Patent No.2,241,523. In accordance with a feature of the present invention, theedge gage shifting mechanism is automatically returned to its initialposition by the lowering of the work table to accommodate the removal'ofa sole from and the presentation of a new sole to the open atinginstrumentalities of the machine. In accordance with a further feature,the machine illustrated herein is provided with a cam which not onlycontrols the movements of the edgegage but which also itself determinesthe number of stop positions of the cam. This cam is one of a series ofreadily replaceablecams designed to shift the edge gauge greater or lessdistances according to the type of work desiredand to select one or morestop positions among the total number of stop positions provided by themechanism. With the above and other objects in View the invention willnow be described with respect to the following drawings and willthereafter be pointed out in claims.

In the drawings,

Fig. 1 is a side elevation of a} portion of a channeling machine rovidedwith the improved mechanism; r

operated upon by the channeling knives.

1 Fig. 2 is aplan viewof s'ome of the parts shown in Fig. 1 includingthe edge gauge and the operatingmembers directly associated therewith;

Fig.3 is an endelevation of part of the im'- proved mechanism;

Fig. 4 is a sectional side elevation on the line IVIV in Fig. 3;

Fig. 5 is a detail View, partly in section, of a latch arm shown in Fig.4; and

Fig. 6 is a sectional View taken on the line VI -VI of Fig; 3. i

The illustrated machine is provided with an edge gage l (Figs. 1 and 2)against which the edge face of an insole is held by an operator as theinsole is fed through the machine and is The improved mechanismillustrated herein consists of a-power operated device controlled by theoperator for moving the edge gage transversely of the direction of feedof the work at various times during the operation to cause thechanneling to be performed at different distances from the edge of theinsole. This mechanism has a bell-crank lever 3' which is pivotallymounted on an eccentric I carried by the upper endof a vertical shaft 9rotatably mounted for adjustment in the frame of the machine' The lever3 has an arm 5 upon the free end of which are formed gear teeth whichmesh with rack teeth on a slide upon which the'edge gage is carried. Theedge gage I, the arm 5 and the above-mentioned slide are similar tocorresponding elements of the machine disclosed in Letters Patent No.1,023,801 already referred to. The purpose of the eccentric is toprovide anadjustment to bring the gear and rack teeth' accurately intoengagement. The bell-crank lever 3 has another arm II which is pivotallyconnected by a universal coupling '30!) to one end of a substantiallyhorizontal link l3. The opposite end of the link 13 is pivotallyconnected by a universal coupling comprising a pin 14 to the upper endof a cam lever 15 (Fig. 3). A horizontal stud l1 secured in a bracket l9which is mounted upon the frame of the machine provides a fulcrum forthe cam lever about midway between the ends of the lever. The pin M is'rotatably mounted in the lever [5 to provide an initial adjustment ofthe edge gage, the portion of the pin which engages the link beingeccentrio. The lower end portion of the lever 15 carries a cam roll 2|which engages the edge faceof a rotary cam disk 25. A tension spring 23.between the arm ll of the bell-crank lever 3 and a post 30I on thebracket l9 holds the cam roll against the'cam.

The cam 25 is secured on a shouldered portion 21 (Fig. 4) of a rotaryblock 29, the cam having a central bore which fits on the shoulderedportion of the block. The cam 25 has also a small hole 295 whichreceives the reduced end portion of a spring plunger 3| slidably mountedin the rotary block 29. This plunger not only assures that the cam willbe mounted in proper angular relation upon the block, but it alsoprevents rotation of the cam relatively to the block.

The block 29 is rotatably mounted on a flange sleeve 33 which in turn issecured upon a stationary bushing 35. Screws l9 passing through a.flange on the bushing 35 clamp the bushing to the bracket l9. ing 35 bya collar 39 threaded on the end portion of the bushing 35 to clamp thesleeve 33 against the flange of the bushing 35. The block 29 isprevented from moving axially on the sleeve 33 by engagement at one endwith the flange on the bushing 35 and by engagement at the other endwith a flange 4| formed on the sleeve 33. Mounted upon the collar 39 andsecured thereupon by a bayonet coupling comprising pins 45 is a collar43. The pins 45 are secured in the collar 43 and engage grooves in thecollar 39. When the collar 43 is thus secured by the bayonet couplingits end bears against the front face of the cam 25 and holds the cam onthe shouldered portion 21 of the rotary block 29. The cam may readily bewithdrawn from the block 29 by twisting the collar 43 and drawing itfrom the collar 39. Another cam having different characteristics maythen be placed on the shouldered portion of the block and secured by thecollar 43.

The rotary block 29 is provided with gear teeth 41 which mesh with apinion 49 secured on a horizontal counter shaft which is rotatablymounted in bearings on the bracket 19. The counter shaft 5| also hassecured on it a gear 53 which meshes with a pinion 55 secured on ahorizontal driving shaft 51 which is rotatably mounted in the bushing35.

The pinion 55 is slidably keyed on a reduced The sleeve 33 is secured tothe bushrear portion of the driving shaft 51. .The forward end, i. e.,the left-hand end as viewed in Fig. 4, of the pinion is held against ashoulder v59 on the driving shaft by a clamping sleeve 6| rotatable withthe driving shaft and movable axially thereupon. A rear end portion, i.e. left as viewed in Fig. 4, of the clamping sleeve 61 is mounted in asleeve 63 which rotates in an adjustable bushing 35 externally threadedfor axial adjustment into the bracket 19.

Slidably mounted on the sleeve BI .is a clutch member 61 which carriesupon its front .face a leather friction ring 69. Forward movement of theclutch member serves to bring the friction ring into engagement with abraking surface 1| on the bracket l9 to stop rotation of the drive shaft.51. The clutch member 61 also has formed on it an external conicalclutch face, which upon rearward movement of the clutch member engagesan internal conical clutch face 13 formed on a pulley 15 driven by anysuitable source of power. The pulley 15 is mounted upon a bushing 11which is rotatably mounted on the .clamping sleeve 6|. The pulley 15 isprevented from endwise movement in one direction on the clamping sleeve6| by a flange 19 formed on the sleeve 6 l, and in the oppositedirection by a washer Bl which is held against a shoulder 83 on theclamping sleeve 6| by the forward end of the sleeve 63. A flange 95formed on the rear end of the sleeve 63 engages the rear end of theadjustable bushing 65. The

adjustable bushing 65 has formed on its rear end to the pin.

portion a flange 81 in which are provided recesses for engagement with awrench to enable the adjustable bushing to be rotated for adjustment. Alocknut 89 threaded upon the adjustable bushing 65 between the flange 81and the bracket l9 holds the bushing 65 in adjusted position. The lengthof the adjustable bushing 65 is only slightly less than the distancebetween the front end face of the sleeve 63 and the flange on the sleevebearing, just enough to provide running clearance for the washer 8! andthe flange 85. Hence if the bushing 65 is adjusted forwardly, the clutchface 13 on the pulley 15 will be adjusted forwardly toward the externalconical clutch face on the clutch member 61 and the distance apart ofthe two clutch faces will therefore, be reduced. As will hereinafterappear, the clutch member 61 is moved by a spring into engagement withthe pulley to cause the drive shaft 51 to be driven, and is positivelymoved into engagement with the brake face H to stop the rotation of thedriving shaft 51. The distance apart of the braking face 1| on thebracket 19 and the friction ring 69 on the clutch member 61 maytherefore be adjusted to take up wear or to vary the position in whichthe driving shaft is stopped, by means of the adjustable bushing 65. -Anut 9| and a locknut 93 are threaded upon the rear edge portion of thedriving shaft 51. The nut 9| engages the rear end face of the sleeve 63to clamp the sleeve against the washer BI and also to clamp the washer8| against the shoulder 83 and to clamp the front end of the sleeve 6!against the pinion 55, and the pinion 55 against the shoulder 59. Thedriving shaft 51, the sleeve 6|, the

washer BI and the sleeve 63 are thus all clamped together by the nut 9|.Not only do these parts all rotate together but they also move axiallytogether upon adjustment of the bushing 65. The width of the gear teethon the gear 53 and the pinion 55 is suflicient to accommodate suchslight movements of the pinion 55.

The driving shaft 51 is bored axially to accommodate a rod 95 which isslidably mounted in the bore and which projects rearwardly from thedriving shaft. Secured in the forward end portion of the rod 95 andextending diametrically therefrom is a pin 91. Elongated openings areprovided in the drive shaft 51 and in the clamping sleeve 6| toaccommodate movement of the pin in the direction of the axis of theshaft. These openings are no wider than the .pin itself except forreasonable clearance and the rotary movement of the driving shaft istherefore communicated The outer ends of the pin engage openings in theclutch member 61 which is thus slidably keyed upon the clamping sleeveGI and the driving shaft 51.

It is evident that forward axial movement of the rod 95 will move theclutch member 61 into engagement with the braking face 1| on the bracket19, and that rearward ,axial movement of the rod 95 will move the clutchmeme ber 61 into clutching engagement with the pulley 15. Housed withinthe forward end portion of the bore in the driving shaft 51 is acompression spring 99, one end of which engages the forward end of therod .95. The opposite end of the spring 99 engages .a screw IOIadjustably threaded into the forward end portion of the bore. The spring99 tends to move the clutch member 91 into driving engagement with thepulley 15 to cause the driving shaft 51 to be driven.

The rear rounded end of the rod 95 engages the forward end of ahorizontal abutment screw I03 threaded for adjustment through a clutchlever I95 which is pivotally mounted on a horizontal stud I01, carriedby the bracket I9. Forward movement of the lever I 05, which is effectedby means later to be described, causes the screw I93 to move the rod 95forwardly thereby causing the pin 91 to move the clutch member 61 intoengagement with the braking face H on the bracket I9 to stop rotation ofthe driving shaft 51. t

Extending downwardly from the leve I05 is an arm I09 to whichisconnected one end of a tension spring III. 'I'heopposite end of thespring II I is connected to a hook on the bracket I9. The spring IIItends to move the clutch lever I05 and therefore, the screw I03 awayfrom the rod 95. Movement ofthe clutch lever I05 by the tension springIII is limited by a horizontal link II3 adjustable in length and pivotedto the bracket I9 at its forward end. Formed in a rear end portion ofthe link I I3 is a slot 'II5 which is engaged by a pin H1 in the upperend portion of the clutch lever I 05.

Pivotally connected to the upper end of the clutch lever I05 is aforwardly extending rod II 9 having its forward end pivotally connectedto a more or less vertical clutch controlling arm I2I. The lower end ofthe arm I2! is pivotally mounted on a horizontal spindl I23 securedinthe bracket I 9. Secured upon the rear face of the clutch controllingarm I2I is a hardened block I25. The portion of the arm I2I above theblock I25 is in the form of a yoke and embraces a clutch-release arm I21which is pivotally connected at its forward end by a horizontal pin I29to the upper portion of a clutch opening lever I 3|. The clutch-releasearm I 2'. has secured upon its under face a hardened block I 33. Whenthe clutch is open and the brake is applied, the forward edge face ofthe block I33 is in engagement with the rear face of the block I25 onthe clutch controlling arm I2I. The clutch opening lever I3I is more or.

less vertical and is pivoted, about mid-way of its length on ahorizontal spindle I35, secured in the bracket I9. The clutchrelease armI21 is urged downwardly and the upper end of the clutch opening leverI3I is urged rearwardlyby a tension spring I31 interposed between theclutch-release arm I21 and the bracket I9.

Formed upon the lower end portion of the clutch opening lever I3I i awedge face I39 which is so arranged as to be engaged by a pin I4Isecured in the rotary block 29 on which Ihe cam 25 is mounted. Rotationof the block 29 thus brings the pin MI into engagement with the wedgface I39. When the clutch is closed and the driving shaft 51 isrotating, the pin I II as it travels along the wedge face I39 pushes thelower end of the clutch opening lever rearwardly and causes the upperend of the lever to swing forwardly. Such forward movement of the leverI3I causes the clutch-release arm I21 also to move forwardly and theblock I 33, therefore, through its engagement with the block I25 causesthe clutch controlling arm I 2| to move forwardly and through the rod II9 to swing the clutch lever I05 forwardly. Such movement of the clutchlever through the rod 95 causes the clutch member 61 to move out ofengagement with th pulley 15 and into engagement with the braking face Hto stop rotation of the driving shaft 51.

To enable the operator to close the clutch at will, there is provided ahand lever I43 (Figs; 1 and 4) which is pivoted on a horizontal shaftI45 rotatably mounted in a portion I41 of the bracket I9. The hand leverI 43 has a forwardly extendingarm I49 which may be depressed by theoperators finger and it has also a rearwardly extending arm I5I (Fig. 4)with the rear end portion of which a latch I53 is pivotally connected bya pin I55. The arm I49 of the hand lever is normally held up in a stopposition by a spring 39I. The upper end of the latch I53 lies, when thedriving shaft is stationary and the clutch member 61 is in brakingposition, beneath the rear end portion of the clutch-release arm I21.The latch I53 is urged forwardly against a block I59 by a spring I51,the block I59 being adjustably mounted on the rod II9. When the operatordepresses the arm I 59 of the hand lever I45, the latch I53 is raisedand moves the clutch-release arm I21 upwardly thus disengaging the blockI33 from the block I25 andallowing the clutch controlling arm I2I andthe clutch lever I05 to be moved rearwardly.

i. e. to the right as viewed in Fig. 4, by the spring III. Such movementof the clutch lever I05 enables the rod 95 under the influence of' thespring 99 to move rearwardly, th reby moving the clutch member 61 awayfrom the braking face II and into driving engagement with the pulley 15to cause the driving shaft 51 to be driven. As the clutch controllingarm I2I moves rearwardly, the block I25 will move beneath the block I33,and the block I59 carried by the rod H9 will move the latch I53rearwardly from beneath the clutch-release arm I21. The lower end of theclutch opening lever I3I is held rearwardly by the pin I4I until thedriving shaft 51 begins to rotate. Just after such rotation of thedriving shaft .51 has begun, the pin I II will be carried away from thewedge face I39, and the spring I31 will mov the upper end of the clutchopening lever I3I and the clutchreleasing arm I21 rearwardly. The blockI33 is thus enabled to move down behind the block I25 in readiness toopen the clutch when the pin I4! in the course of its rotary movementagain engages the wedge face I39.

The hand lever I43 may be released by the op erator immediately after hehas started rotation of the driving shaft 51. in which case the upperend of the latch I53 (which has been pushed rearwardly from under thearm I21 by the block I 59) will be lowered to below the level of the armI21. ment, will move over the top of the latch I53; and when the arm I21later moves forward to stop the drive, the block I59 on the rod $49 willalso move forward and permit the latch I53 to move forward until boththe arm I 21 and the latch I53 come to rest in their forward positionswith the latch I53 under the arm I21 in readiness to release the clutchagain. However, if the operator should hold the hand lever M3 depresseduntil the driving shaft has been stopped, the latch will then, when thehand lever is released, be moved down and will snap under the rear endportion of the clutch-release arm I21.

As has already been mentioned, the pin I M is mounted in the rotaryblock S29. Five other pins I9! (Fig. 4) also are carried by the rotaryblock 29. The pins I6I are similar to the pins I II except that they areslidably mounted in the block I29 for movement in a direction parallelto the axis of the drive shaft. Each of the pins I5I is engageable withthe wedge face I39 in the same Way as the pin I 4| for causing theclutch to be opened and the driving shaft to be stopped. The pins MI andIBI are all equally spaced angularly Then the arm I21, in its rearwardmoveabout the axis of the rotary block and, if all five sliding pins It!are in operation, the driving shaft will be stopped after every /6 of arevolution of the rotary block. It will be understood that the cam willcontrol themovements cf the edge gage in accordance with its peripheralcontour and that the cam may readily be removed and similar cams ofdifferent designs secured on the rotary block 29 in its place. Thedesign of each cam and the number of its stopping positions will dependupon the desired positions of the edge gage'relatively to the channelingknives and also upon the number of changes in the position of the edgegage during the operation. The sliding pins Nil, or some of them in therotary block 29, are arranged to be held in a rearwardly extendedposition by abutting engagement with the face of the cam 25. When inthis position the pins will be operable to engage the wedge face I38 onthe clutch opening lever HM to cause the driving shaft to be stopped.Each of the pins IGI carries a transverse pin 3 I I, the extending endsof which engage a recess in the frame I as to limit rearward movement ofthe pin I61. When the forward end of the pin IIBI is against the cam 25,the transv verse pin SI I will be substantially against the base of theabove-mentioned recess, and the pin IE! will thus beheld againstlongitudinal movement. If it is desired to change the position of theedge gage six times during the channeling of an insole all the slidingpins Ill! will be held in their operating positions by the cam, but ifit should be desired to change the position only four times, the camthen selected would have in it two holes 2Iflarranged to be in linewith. two of the sliding pins to allow these pins to be pushed forwardlyby the wedge face 38 without effecting the opening of the clutch. Theholes in the cam thus render the pins in line with them inoperative. Theperipheral edge .of the cam selected for this purpose will vbe so shapedas to cause only four changes in the position of the edgegage during acomplete rotation of thecam. It will b'Ll1'ldE1 stood that a number ofdifferently shaped cams may be provided for use in a single machine, andthat these cams may have openings in them to receive some of the slidingpins, the number of openings depending upon the desired number ofstopping positions of the cam.

If, for example, a channeling machine equipped with the mechanism abovedescribed is to be used for operation upon an insole for a welt shoe inwhich it is desired that the width of the feather i. e. the portion ofthe face of the insole between the channel lip and the edge of the sole,shall be along both sides of the shank portion of the insole along bothsides of the forepart as far as the toe portion, and around the toe,then the cam selected for this operation will have two openings to allowtwo of the sliding pins in the block to move forwardly when they engagethe edge face on the clutch opening lever. The other three slide pinsIKiI and the pin MI will be effective to stop rotation of the drivingshaft when they engage the wedge face I39 on the clutch opening lever I3I.

When the operator begins the channeling of such an insole along theshank portion at one side of the sole, the cam will be in its initialstopped position with the pin MI in engagement with the wedge face I59.When in this position the portion of the cam which is engaged by the camroll 2! will be so designed as to cause the edge gage to position thesole relatively to the channel knives in such a manner as to cause thefeather to be wide. Theoperator will begin the sham neling along-theshank, and as the channeling approaches the forepart, he will depressthe hand lever M3 and thus cause the cam to be rotated. The hand leverM3 operates to start rotation of the cam by raising the clutch-releasearm I21 and. thereby freeing the clutch controlling arm IZI. The leverI05 is thus released to the action of the spring III which swings it ina clockwise direction, as-viewed in Fig. 4. The resulting rearwardmovement of the abutment screw I03 permits the rod to move rearwardlyunder the influence of the spring 99; and the rod 95 carries the pinSIrearwardly to bring the clutch element 6! into engagement with therotating pulley 15. The clutch element 51 now begins to rotate; and itdrives the shaft 51 through the pin 91. The shaft 51, through gears 55,53, 49 and 4], drives the rotary block 2 9 upon which is secured the cam25. Rotation of the cam 25 will operate the lever I5 which, through thelink I3, will operate the bell crank 3 to. shift the edge gage I. Duringthe rotation of the cam, which will be stopped by the first sliding pinI1'5I, the edge gage will be moved forwardly and held in forwardposition while the channeling proceeds along the forepart, the positionof theedge gage causing the featherto be e wide. As the channelingapproaches'the toe, the operator will again depress the hand leverI43-and thereby cause the cam to be rotated until it is stopped by thesecond sliding pin-Ifil. During this portion of the rotation of the camthe edge gage is moved rearwardly and held in such a position by the camthat during the channeling around the toe, the feather will be wide. Asthe forepar't of the other side of the sole is approached the operatoragain depresses the hand lever Hi3 and thereby causes the cam to rotateuntil it is stopped by the third sliding pin IEI. Duringlthis part ofthe rotation of the cam the edge gage-is moved forwardly into such aposition that the width of the feather along the forepart is Finally asthe channeling approaches the shank the operator again depresses thehand lever I43 and the cam is'rotated until it is stopped by the pin MI.During this part of the rotation of the cam, the edge gage is movedrearwardly and is so positioned that the width of the feather along theshank is The cam is then in position for the beginning of the channelingof another insole which is to be chan neled ina similar manner. Y

Each cam, as has already been mentioned, has a holefor engagement withthe spring plunger 3| to assure the proper position of rotationrelatively to the block 29. Each cam also will have on it a zero markwhich, when the cam is placed on the rotary block with the springplunger 3! properly orienting the cam and with the pin MI en,- gagingthe wedge face I 59 to hold the clutch open, will be close to the camroll 2|.

The time during which the edge gage is being moved forwardly orrearwardly to vary the width of the feather depends upon the shape ofthe cam, and the change'from one width of feather to another width maybe gradual or rapid. The parts of each cam which efiect the change inthe position of the edge gage are indicated by arcuate lines on the camconcentric with the axis of the cam. The remaining portions of theperiphery of the cam are cylindrical so that although the cam isrotating to its next stopping position, no

movement forwardly or rearwardly of the edge 2,349,379 soles may bedifferent at opposite sides of the shank, and in such cases the width ofthe feather at the inner and outer sides of insoles for right and leftshoes will be the same. For example, it may be required that the widthof the feather at the inner side of the shank of each insole is to be Aand along the outer side of the shank refl.

When beginning the channeling of a right insole, as above described,theedge gage must be so positioned by the cam that the width of thefeather.

is it being understood that the channeling usually begins in the shankand travels in the.

same direction around the forepart, whether the insole is for a rightshoe or a left shoe. In channeling the left insole, the feather at thebeginning j of the operation, must be wide. In such a case instead ofusing two cams, one for a right insole and the other for a left insole,the same cam may be used. However, this cam must be removed from therotary block and replaced in an inverted or reversed position uponchanging from a series of right insoles to a series of left and viceversa. f

Both sides of the cam are provided with a zero mark and with a holesuitably arranged for engagement with a spring plunger 3I.

When it is desired to produce a feather which I is Wider at one side ofthe shank than at the other side, the edge gage will occupy one positionat the beginning of the operation and another po sition at the end ofthe operation. It is, therefore, necessary to move the cam to itsstarting or zero position after one insole is taken out of the machineand before another insole is presented thereto. To relieve the operatorof the necessity of remembring to trip the clutch for the purpose ofcausing the cam to move to its starting position, the illustratedmechanism is provided with means for tripping the clutch automaticallywhen a work support I63 (Figs. 1 and 6) is dethe machine. For thispurpose, the hand lever I43 has another forwardly extendingsubstantially horizontal arm I65 (Figs. 4, 5 and 6), the forward endportion of which has slidingly mounted in it a spring plunger I61 inwhich is formed a recess 3H] to receive the upper end portion of a rod I69. Secured upon the arm I65 is a plate I1I arranged to limit forwardmovement of the plunger I61 by engagement with a shoulder on theplunger. Formed upon the upper end portion of the rod I69 is a hook I13arranged to engage the upper face of the plunger adjacent to the innerend of the recess 3 I 0 to cause the clutch to be closed when the rodI69 is moved downwardly. The lower end portion of the rod I69 ispivotally connected to an arm I15 which is secured to a shaft I11,rotatably mounted in the machine frame. Another arm I19 secured to theshaft I11, is connected by a link I 8I to a vertical link I83(corresponding to the link 4 I-of U. S. Letters Patent No. 984,773granted February 21, 1911 upon the application of William C. Meyer)pivotally mounted for free swinging movement upon a stationary pin 320.The work support I63 is carried upon the upper end of a slide 322 whichis movable heightwise in a guideway formed in the machine frame. Thelower portion of the slide 322 carries a pin 324 upon which is pivotallymounted one arm of a bell crank 326. A pin 328, carried by the link I83,provides a fulcrum for the bell crank. A treadle rod 330, connected tothe other arm of the bell crank, rocks the bell crank to depress theslide 322 against the tension of a spring pressed to enable the work tobe removed from 332 which normally holds the slide up to maintain thework table in its operating position.

Secured upon the rear face of the cam 25 is a rounded member 200engageable with the rod I69. When the cam 25 is in its last stoppingposition (as shown in Figs. 3 and 6) before initial position, therounded member 20!! holds the rod I69 far enough within the recess inthe plunger I61 for the hook I13 to engage the plunger. A tension springI tends to swing the rod I69 forwardly, but is prevented from doing soby the rounded member 200. Now, when the work table is lowered for theremoval of a work piece and the insertion of a new work piece, the hookI13 will trip the clutch in the manner already described, and the cam 25will be rotated into its initial or zero position. Such rotation of thecam 25 will carry the rounded member 26!] away from the rod I69. Thetension spring I85 will thereupon swing the rod I69 forwardly intoengagement with a stop 2IlI, such movement of the rod serving to carrythe hook I13 out of operative relation to the plunger I 61. The stop2IlI prevents the rod I69 from entirely leaving the recess in theplunger I61, and also from striking the cam 25. The rod I69 will remainin this inoperative position until movement of. the cam into said laststopping position will cause the rounded projection 260 to engage therod I69 and move the rod rearwardly into operative position. If the camis intended to be used also in reversed position, it will carry arounded projection 2110 upon each face.

Having thus described our invention, what we claim as new and desire tosecure by Letters Patent of the United States is:

1. In a machine for operating on soles, a support for a sole to beoperated upon, an edge gage for the sole, means for moving said solesupport to accommodate the removal of a sole from and the presentationof a new sole to the operating instrumentalities of the machine,operator-controlled means for shifting the edge gage from an initialposition to vary the locality of the operation in relation to the edgeof the sole, and means controlled by said sole-support moving means forreturning the edge gage to said initial position when the sole-supportmoving means is operated to accommodate the removal of a sole from andthe presentation of a new sole to the operating instrumentalities of themachine.

2. In a machine for operating on soles, a sole support yieldingly heldup in an operating position, an edge gage for the sole, mechanism forlowering the sole support to accommodate the removal of a sole from andthe presentation of a new sole to the operating instrumentalities of themachine, power driven means for shifting the edge gage from an initialposition to vary the locality of operation in relation to the edge ofthe sole, operator-controlled means for actuating said power drivenmeans to shift the edge gage from initial position, and means operatedby said mechanism for actuating said power driven means to return theedge gage to initial position upon the lowering of the sole support.

3. In a machine for operating on soles, an edge gage for a sole, anormally stationary cam, mechanism controlled by said cam fordetermining the position of said edge gage, means for driving said camto vary the position of said gage, operatorcontrolled means for startingthe drive of said cam, and means controlled by said cam for stopping thedrive of the cam.

4. In a machine for operating on soles, an edge gage for a sole. arotary cam, mechanism conk trolledby said cam-for determining thepositionf saidedge gage, means for driving the cam to 'vary thepositionof the gage, means for starting the-drive 'ofthe cam, means for stoppingthe drive ,iof-j-the cam, and means carried by said cam for.a'ctuatingl'said stopping means at a desired posiltion of rotation ofsaid cam.

gage'fora sole-, alhormally staitonary replaceable- 'r'otai lwcamrnechan'i'sm controlled by said cam i:"for,determininggthe' position ofsaid edge gage, m ans-swarming; said cam, operator-controlled I meari'sFfor starting the drive of said cam, andbeen started to stop thedrive at one of a plurality of control positions, said replaceable cambeing constructed and-arranged to engage said stopping means selectivelyto cause the drive to stop only at the control positions desired forthat particular cam. I I 6. In a machine for operating on soles, an edgeablyi mounted, mechanism controlled by said cam fob-determining theposition of said edge gage, means for-driving said rotary member, aclutch for coupling and uncoupling said driving means to said'rotarymember, operator-controlled means plingsaid clutch, and a plurality ofpins angularly spaced around the axis of the cam and slidber formovement in a direction parallel to the an extended position in itsguideway by abutting the face of the cam being engageable with the thecam in a predetermined'position, said reingdifferent characteristics,and each cam havpositions'of that particular cam.

Ina machineffor operating on soles, an edge means operableafter thedrive of the cam has gage for a sole, a normally stationary rotary cam,a rotary member upon which said cam is replacefor couplingsaid clutch,mechanism for uncouably mounted in guideways in said rotary memaxis ofthe cam, each of said pins when held in' unclutching mechanism to stopthe rotation of placeable cam being one of a series of cams havingholes'in'its face to enable one or more of the pinsto slide fromextended to inoperative posi tion, thereby selectively determining thestopping gregate:

- '7. In a machine for operating on soles, an edge gage for a sole,mechanism for positioning said edge gage, a shaft, operator-controlledmeans for coupling said shaft to a source of power, mechanism foruncoupling the shaft, a cam for 0011- v trolling saidedge-gage-positioning mechanism and also for controlling said uncouplingmech-. anism, said cam being one of a series of interchangeable cams ofdifferent characteristics, and means for readily and interchangeablysecuring said cam on said shaft in operative relation to saidpositioning and said uncoupling mechanisms 1 I to efiect a desiredpositioning of the edge gage and to uncouple the shaft from the sourceof 1 power a desired number of times for a single rotation of the cam. v

8. In a machine for operating on soles, an edge 7 gage for a sole, anormally stationary rotary cam, mechanism controlled by said cam fordetermining the position of said edge gage, a hollow drive shaft,driving connections between said shaft and said cam, a driven frictionclutch member slidably mounted on said shaft, a clutch operatingv of thecam when the driven clutch member is moved axially in the oppositedirection, yieldable means for urging said driven clutch member intodriving position, means engageable with said clutch rod for positivelyholding the driven clutch member in braking position, and means forcontrolling said holding means to start and stop rotation of the cam.

FRED RICKS.

J OI-LN WILLIAM PRATT.

